and this is an environment that is wide open. >> like my first thought was i was concerned something happened but then... it's probably to the bad to have security. >> this is providing security for the public, they're alerted. so are we. >> the primary mission to save guard the transportation lines, the viper teams are used at high profile he veents we have viper teams in washington, d.c. support inauguration. we'll have viper teams in new orleans when they win the super bowl. >> they were here in the bay area in san francisco for world series, and we're told they occasionally pop in over in oakland for a raider game. >> police want to you take a look at a sketch of a man wanted for trying to snatch a 3-year-old girl out of her mother's arms. here it s police say it is critical to get this man off the streets before he strikes again. the mother says the man began chet chathing with them around 5:30 last night. >> he kneeled down to talk to my 3-year-old picked her up by her ankles and started to pull her from me. her bots fell off, pants coming off. he was pulling hard. >> neighbors